Upgraded to jQuery 3.2.1

This avoids a security vulnerability in older versions.

LEARNER-456

bower.json

@@ -13,7 +13,7 @@
     "clipboard": "1.5.12",
     "datatables": "1.10.12",
     "edx-pattern-library": "~0.18.0",
-    "jquery": "^3.1.1",
+    "jquery": "^3.2.1",
     "jquery-ui": "1.10.3",
     "js-cookie": "2.1.2",
     "moment": "~2.13.0",

course_discovery/templates/demo/query_preview.html

@@ -113,7 +113,7 @@
   </div>
 </div>
 
-<script type="text/javascript" language="javascript" src="//code.jquery.com/jquery-1.11.3.min.js"></script>
+<script type="text/javascript" language="javascript" src="//code.jquery.com/jquery-3.2.1.min.js"></script>
 <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"
         integrity="sha256-KXn5puMvxCw+dAYznun+drMdG1IFl3agK0p/pqT9KAo= sha512-2e8qq0ETcfWRI4HJBzQiA3UoyFk6tbNyG+qSaIBZLyW9Xf3sWZHN/lxe9fTh1U45DpPf07yj94KsUHHWe4Yk1A=="
         crossorigin="anonymous"></script>